Well time does fly by quickly in the show. I mean they travel a lot which also takes a lot of time. I mean Kouha had to go back to his country when Aladin was training in his first year. From what I've heard Magnostadt and the Kou Empire are pretty far apart so that's a long travel. Hell it might already be the second year for Aladin right now.

On sidenote I like how cunning Sinbad is using Kogyoku to spy on their plans. At least that's what I gather from her eyes lighting up green for a moment and the image of Sinbad's Full Equip in her mind.